Stove.



No. 6s|,7q7.1 Patented mw. la, |900.

H. H. SANFORD.

STOVE.

(Application led Apr. 18, 1900.)

(No Model.)

llivrrnn STA/res HENRY. H. SANFORD, OF DETROIT, MICHIGAN.

STOVE.

SPECIFICATION forming part of Letters Patent N o. 661,707, dated November 13, 1900.

Application filed April 16, 1900.

T0 wl whom t nui/y concern,.-

Be it known that I, HENRY H. SANFORD, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Stoves, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention has reference generally to stoves or furnaces; and it consists in the peculiar construction of a stove whereby a minimum amountof smoke and soot will be formed by the burning fuel.

In the drawings illustrating myinvention, Figure 1 is a vertical longitudinal section through the stove. Fig. 2 is a section taken on lineman, Fig. l. Fig. 3 is a section on line y y of Fig. 2, showing the manner of attachment between the fire-pot and base-section and the means for supportingthe grate. Fig. 4 is aperspective view ofthe grate, showing the parts thereof detached; and Fig. 5 is a section taken on line z z, Fig.` l.

In the drawings thus briefiy described the reference-letter A designates the base-section of the stove, which may be of any desired construction and which is provided with inwardly-extending lugs ot, preferably four in number, as plainlyshown in Fig. 3. Mounted upon this section is the fire-pot B, provided with lugs b, corresponding in location and number and secured in any suitable manner to the lugs upon the base-section. In construction the fire-pot comprises an annular casting C, provided with a series of vertical slots or passages D formed in its inner face, the series extending circumferentially and entirely about the body, as shown. Each slot extends, preferably, from edge to edge of the iirepot and tapers from the lower edge, where it is at its maximum width, to the top. Thus means are provided whereby the clogging or choking of ashes within the slots will be prevented.

C2 is the stove-grate, which I preferably arrange upon the lugs b of the fire-pot.

It will be obvious from theconstruction of the mechanism as thus set forth that air admitted within the interior of the base-section through suitable draft-openings in the door Serial No. 13,129. iINo model.)

F will be free to pass upwardly through the vertical passages or slots in the fire-pot, also that bycoming in contact with the fuel it will cause the portion of the latter immediately adjacent to the wall of the fire-pot to burn intensely and allow the central portion of the fuel to coke. The greater portion of the air continues in an upward direction ,through the slots and passes over the top of the fuel.

body of the fuel in the usual manner, producing the soot and smoke that it is desired to eliminate. To accomplish the desired result and also to provide means whereby the discharge of the ashes will not be interfered with, I employ a type of grate the dischargepassages of which can be opened and closed at will.

In construction the grate comprises a lower section G, having a multiple of radial ashdischarge passages f and a central passage g formed therein, a similar rotatable section H, mounted thereon, having similar openings formed therein, and means for moving the rotatable section to bring the radial ash-discharge passages into and out of alinement for the purposes set forth. The lower section described rests, as before stated, upon the lugs h and is provided in turn with depending lugs b at its periphery, so arranged upon the section that they will abut against the lugs upon the fire-pot and prevent movement of the stationary section in either direction. The lower section is also provided on its lower face with guides e' upon opposite sides of the central opening, and arranged beneath said opening and having a sliding engagement with the guides is an imperforate plate H', adapted to close the central opening of the grate. The plate is provided with extensions IOO . senior j, permitting the plate to be reciprocated, and has extending from thefront edge thereof a draw-bar I, which extends through a depending apertured lug` or ear .I upon the upper rotatable grate-section H.

In order that the shaking of the grate may be more easily effected, I have formed in the lower grate-.section a series of circumferential ball-races la and arrange within said recesses 'suitableballs Z, thus forming a ball-bearing between the sections.

When the fire is under headway, the supply of air from the ash-pit section which passes over the top of the fuel is suflicient to prevent the fire smoking. When new fuel is added to the iire, however, the air-supply is not sufficient to prevent the formation of soot and smoke, and I have therefore provided means whereby an additional supply of air may enter over the top of the fuel. from the side of the stove. The means I employ consists of a hollow ring D', which I arrange upon the upper edge ofthe lire-pot casting and secure the parts togetherin any suitable manner. This ring is provided with a series of apertures D2, the apertures being formed in the lower wall 0f the ring andarranged one over each vertical slot in the casting, as sho-wn. is further provided with one or more draftopenings, such as D3, in the outer side Vof/the ring, controlled by a suitable slide-damper D4, adapted to be operated by a lug or handle D5. When fuel is added to the fire, the'draft openings in the ring, which are normally closed, are opened, and an additional air-supply is provided for the gases, thereby eliminating the formation of the smoke and soot.

' Thestove-grate is normally closed for the reasons before set forth, except at such times The ring' when it is desired to remove the ashes, when the grate is operated in the manner described.

What I claim as my invention is- -l. In a stove, the combination with the ashpit section provided with a draft-passage leading into its interior, of the re-pot above the ash-pit section having a series of substantially vertical andv circumferentially arranged air-passages formed in its inner surface, a grate at the bottom of the {ire-pot, means for opening and closing the ash-discharge passages in the grate, whereby the entire draft through the ash-pit section may be caused to ascend through the series of passages in the fire-pot, and a hollow ring at the top of said lire-pot provided with an opening or openings leading to the air-passages in the {ire-pot and having one or more draft-openings formed therein. t

2. I-n a stove, the combination with the ashpit section, provi-ded with one or more draftpassages leading into its interior, -of a fire-pot above the ash-pitsection having a series of substantially vertical and circumferentiallyarranged air-passages formed in its inner su rface, said passages communicating at their lower ends with the ash-pit section, a grate at the bott-om of the fire-pot, and a single closure device for the grate-openings, whereby the air in the ash-pit section may be caused to ascend either through the body'of the fuel or entirely along the sides of the latter, for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

- HENRY I-I. SANFORD.

Witnesses: 1

L. J. WHITTEMORE, H. C. SMITH. 

